The currency of exchange between frameworks is Web Components. So you can use Brisa beyond a framework, you can use its compiler to have Web Components written with JSX and Signals that work in any other framework like Remix. However, for now, if you want to use React inside Brisa, you will have to do something similar to transform React to Web Components. Here is a little guide:

Brisa to other frameworks (or Vanilla.js): https://aralroca.com/blog/reactive-web-components-with-ssr

React to Brisa: https://brisa.build/building-your-application/components-det...

Brisa is a framework but can be used as a compiler to export your Web Components to other frameworks. Take a look https://brisa.build/building-your-application/building/web-c...